You can help expand this article with text translated from the corresponding article in German. (May 2016) Click [show] for important translation instructions. View a machine-translated version of the German article. Machine translation, like DeepL or Google Translate, is a useful starting point for translations, but translators must revise errors as necessary and confirm that the translation is accurate, rather than simply copy-pasting machine-translated text into the English Wikipedia. Do not translate text that appears unreliable or low-quality. If possible, verify the text with references provided in the foreign-language article. You must provide copyright attribution in the edit summary accompanying your translation by providing an interlanguage link to the source of your translation. A model attribution edit summary is Content in this edit is translated from the existing German Wikipedia article at [[:de:Eugen Kahn]]; see its history for attribution. You may also add the template {{Translated|de|Eugen Kahn}} to the talk page. For more guidance, see Wikipedia:Translation.

Eugen Kahn (born 20 May 1887 in Stuttgart, Germany^[1] – died January 1973 in Houston, Texas^[2]) was a German psychiatrist. His "habilitation" supervisors were Emil Kraepelin and Ernst Rüdin.^[3]

He argued Willenlos was a misnomer for the Haltlose, as the patients demonstrated plenty of "will" and simply lacked the ability to translate it into action.^[4] He was the first Sterling Professor of Psychiatry and Chairman of the Department of Psychiatry at Yale 1930-1946.